Since September 4, 2025, a series of widespread demonstrations began in the Philippines, with the largest protests occurring on September 21 at Rizal Park and Liwasang Bonifacio in Manila and at the People Power Monument, Camp Aguinaldo Gate 4, and EDSA Shrine along EDSA in Quezon City, both within Metro Manila. They involve several anti-corruption protests stemming from the ongoing flood control projects controversy that largely involved the Department of Public Works and Highways (DPWH) and the legislative branch of the Philippine government. Several cities and municipalities across different provinces also held local demonstrations.
The September 21 protest in Rizal Park ("Baha sa Luneta") was organized by various sectorial groups, including activists and students, while the simultaneous protest at the People Power Monument and EDSA Shrine is known as the "Trillion Peso March", organized mainly by religious sectors and civic groups. Although protests were characterized as peaceful throughout the country, an isolated riot by masked demonstrators occurred along streets near Malacañang Palace in Manila, injuring several protesters, bystanders and policemen, and resulting in two casualties, one from a stabbing attack and another from a stray bullet.